An automobile manufacturer claims that’s its car has a 54.8 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG rating. After testing 170 cars, they found a mean MPG OF 5.45.Assume the variance is known to be 4.41. A level of significance of 0.01 will be used. State the hypothesis

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)